000 00267nam a2200121Ia 4500
008 200504s9999 xx 000 0 und d
245 0 _aJournal of Periodontology
250 _a-
260 _aForeign
_c2004
490 _v75/I
500 _a-
650 _aPeriodontology
999 _c4101
_d4101